US5232823A - Method for development of silver halide light-sensitive black and white material - Google Patents
Method for development of silver halide light-sensitive black and white material Download PDFInfo
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- US5232823A US5232823A US07/762,114 US76211491A US5232823A US 5232823 A US5232823 A US 5232823A US 76211491 A US76211491 A US 76211491A US 5232823 A US5232823 A US 5232823A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/295—Development accelerators
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
- G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/164—Rapid access processing
Definitions
- This invention relates to a method for the development of a silver halide photographic material and more particularly to a method for rapidly processing photographic material.
- Other methods for increasing development activity in carrying out rapid processing include a method wherein the amount of developing agents is increased and a method wherein the pH of the developing solutions is increased.
- the amount of the developing agents is increased, the amount of sulfites for use in stabilizing the developing solutions must be increased and the amount of solvents for dissolving the developing agents must also be increased. Accordingly, the capacity of concentrates for preparing the developing solutions is increased. In addition, costs are increased. Hence, the application of this method is limited to a certain extent.
- the pH of the developing solutions is increased, stabilization of the developing solution is sacrificed.
- Examples thereof include thioether compounds.
- the details thereof are described in L. F. A. Mason, Photographic Processing Chemistry, page 44 (1975 London, Focal Press), JP-A-58-221843 (the term "JP-A” as used herein means an "unexamined published Japanese patent application"), JP-A-51-90822, JP-A-51-89732, JP-A-49-90536 and JP-A-53-30331.
- the thioether compounds have an effective development accelerating function, but development is accelerated by dissolving silver halide, that is, by utilizing dissolving physical development.
- Typical methods for imparting high sensitivity and high contrast to silver halide light-sensitive materials include the methods wherein polyethylene glycols are used. The details thereof are described in U.S. Pat. Nos. 2,400,532, 2,848,830, 2,944,900, 3,385,708, 3,671,247 and 3,947,273.
- the methods using polyethylene glycols are very effective in processing light-sensitive materials having silver halide emulsion layers containing commonly used silver halide grains such as spherical grains or cubic grains.
- the methods have the problem that graininess becomes poor, and hence these methods are of no practical use.
- the methods using polyethylene glycols are hardly effective in processing light-sensitive materials having silver halide emulsion layers comprising tabular grains which are considered to have a high covering power and to be advantageous in conducting rapid processing.
- An object of the present invention is to provide a method for the development of a silver halide light-sensitive material, which method enables rapid processing to be carried out and allows for the good stability of developing solutions to be maintained.
- Nitrogen-containing heterocyclic mercapto compounds are known in the art as anti-fogging agents or stabilizers. Namely, these mercapto compounds are used to prevent fogging from occurring during the course of the manufacturing, storage or processing of light-sensitive materials or to stabilize photographic performance.
- the present inventors have eagerly studied rapid processing and found that among nitrogen-containing heterocyclic mercapto compounds, compounds represented by general formula (I) described hereinafter can contribute to give a stable image having a high maximum image density, a low minimum image density and excellent gradation, in a short period of time. This effect is specific to the compounds of general formula (I) and is an unexpected phenomenon.
- the present invention relates to a method for the development of a silver halide light-sensitive material, wherein a silver halide light-sensitive material is developed in the presence of at least one compound represented by the following general formula (I): ##STR2## wherein M represents a hydrogen atom, an alkali metal atom, an ammonium group or a group which is cleaved under alkaline conditions; L represents a divalent organic group comprising an alkylene group, an alkenylene group, an ether group, a thioether group, --CO--, --CS-- or --NR (wherein R is a hydrogen atom or an alkyl group) either alone or as a combination of two or more; X represents an amino group which may be substituted by an alkyl group, an ammonio group which may be substituted by an alkyl group, a hydroxyl group, or a heterocyclic group which may be substituted; and n represents 0 or 1.
- M represents a hydrogen atom, an alkal
- M represents a hydrogen atom, an alkali metal atom (e.g., K, Na, Li), an ammonium group or a group which is cleaved under alkaline conditions (e.g., an acetyl group).
- an alkali metal atom e.g., K, Na, Li
- an ammonium group e.g., an ammonium group or a group which is cleaved under alkaline conditions (e.g., an acetyl group).
- L represents a divalent organic group comprising an alkylene group (having preferably 1 to 10 carbon atoms), an alkenylene group (having preferably 1 to 10 carbon atoms), an ether group, a thioether group, --CO--, --CS-- or --NR-- (wherein R is a hydrogen atom or an unsubstituted or substituted alkyl group (having preferably 1 to 10 carbon atoms)) either alone or as a combination of two or more.
- L include an alkylene group.
- the alkylene group may have one or more substituent groups (e.g., carboxyl group, sulfo group, an alkylthio group (having preferably 1 to 10 carbon atoms), the groups represented by X).
- X represents an amino group (including alkyl-substituted amino groups), an ammonio group (including alkyl group-substituted groups), a hydroxyl group or a heterocyclic group (including substituted heterocyclic groups).
- Preferred alkyl substituent groups include an alkyl group having 1 to 10 carbon atoms which may be substituted by a hydrophilic substituent group such as a hydroxyl group, a carboxyl group or a sulfo group.
- heterocyclic groups include five-membered and six-membered nitrogen atom-containing saturated or unsaturated heterocyclic rings such as ##STR4##
- substituent groups for the heterocyclic group include a hydroxyl group, a carboxyl group, a sulfo group, an alkyl group (having preferably 1 to 10 carbon atoms) and a halogen atom.
- a preferred example of X is an amino group which may be substituted by an alkyl group.
- n represents 0 or 1.
- Examples of the compounds represented by general formula (I) include, but are not limited to, the following compounds: ##STR5##
- the compounds of general formula (I) can be added to the developing solutions (working solutions).
- the compounds are used in an amount of preferably 0.01 to 50 mmol/l, more preferably 0.05 to 10 mmol/l, and particularly preferably 0.1 to 5 mmol/l.
- the compounds of general formula (I) in the form of an aqueous solution, an aqueous hydrochloric acid solution or a methanol solution can be added to a hydrophilic colloid solution for forming the photographic emulsion layers of a silver halide photographic material or other constituent layers (e.g., overcoat layers, filter layers, interlayers, etc., but preferably layers adjacent to the emulsion layers containing silver halide grains).
- the compounds may be added at any stage. However, it is preferred that when the compounds are added to the photographic emulsions, the addition is made during the period of just before coating and after chemical ripening.
- the compounds are used in an amount of preferably 1 ⁇ 10 -5 to 1 ⁇ 10 -1 mol, particularly preferably 1 ⁇ 10 -4 to 1 ⁇ 10 -3 mol, per mpl of silver.
- Hydroquinones are the principal developing agent for use in the developing solutions of the present invention. However, a combination of a hydroquinone compound with a 3-pyrazolidone compound or a combination of a hydroquinone compound with a p-aminophenol compound is preferred from the viewpoint of easily obtaining good performance.
- hydroquinone developing agents examples include hydroquinone, chlorohydroquinone, bromohydroquinone, isopropylhydroquinone, methylhydroquinone, 2,3-dichlorohydroquinone, 2,5-dichlorohydroquinone, 2,3-dibromohydroquinone, 2,5-dimethylhydroquinone and hydroquinone monosulfonate.
- hydroquinone is particularly preferred.
- Examples of the p-aminophenol developing agents which can be used in the present invention include N-methyl-p-aminophenol, p-aminophenol, N-( ⁇ -hydroxyethyl)-p-aminophenol, N-(4-hydroxyphenyl)glycine, 2-methyl-p-aminophenol and p-benzylaminophenol. Among them, N-methyl-p-aminophenol is particularly preferred.
- 3-pyrazolidone developing agents which can be used in the present invention include 1-phenyl-3-pyrazolidone, 1-phenyl-4,4-dimethyl-3-pyrazolidone, 1-phenyl-4-methyl-4-hydroxymethyl-3-pyrazolidone, 1-phenyl-4,4-dihydroxymethyl-3-pyrazolidone, 1-phenyl-5-methyl-3-pyrazolidone, 1-p-aminophenyl-4,4-dimethyl-3-pyrazolidone, 1-p-tolyl-4,4-dimethyl-3-pyrazolidone and 1-p-tolyl-4-methyl-4-hydroxymethyl-3-pyrazolidone.
- the hydroquinone developing agents are used in an amount of generally 0.01 to 1.5 mol/l, preferably 0.05 to 1.2 mol/l.
- the p-aminophenol developing agents or 3-pyrazolidone developing agents are generally used in an amount of 0.0005 to 0.2 mol/l, preferably 0.001 to 0.1 mol/l.
- Examples of sulfites which can be used in the developing solutions of the present invention include sodium sulfite, potassium sulfite, lithium sulfite, ammonium sulfite, sodium bisulfite and potassium metabisulfite.
- the sulfites are used in an amount of at least 0.1 mol/l, preferably at least 0.3 mol/l. It is preferable that the upper limit of the sulfite in the concentrate of the developing solution is not more than 2.5 mol/l.
- the pH of the developing solutions used in the development of the present invention is in the range of preferably 9 to 13, more preferably 10 to 12.
- alkali agents used for setting the pH value include pH adjustors such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium tertiary phosphate and potassium tertiary phosphate.
- Buffering agents such as the borates described in JP-A-62-186259, compounds (e.g., saccharose, acetoximes, 5-sulfosalicylic acid) described in JP-A-60-93433, phosphates and carbonates may be used.
- the developing solutions of the present invention contain a chelating agent having a chelate stability constant of at least 8 against iron ion.
- chelate stability constant refers to a constant which is conventionally known by L. G. Sillen and A. E. Martell, Stability Constant of Metal-ion Complexes (The Chemical Society, London 1964) and S. Chaberek and A. E. Martell, Organic Sequestering Agents (Wiley 1959).
- chelating agent having a chelate stability constant of at least 8 against iron ion examples include organic carboxylic acid chelating agents, organic phosphoric chelating agents, inorganic phosphoric chelating agents and polyhydroxy compounds.
- iron ion refers to a ferric ion (Fe 3+ )
- Examples of the chelating agent having a chelate stability constant of at least 8 against ferric ion also include, but are not limited to, compounds such as ethylenediaminediorthohydroxyphenylacetic acid, triethylenetetraminehexaacetic acid, diaminopropanetetraacetic acid, nitrilotriacetic acid, hydroxyethylethylenediaminetriacetic acid, dihydroxyethylglycine, ethylenediaminediacetic acid, ethylenediaminedipropionic acid, iminodiacetic acid, diethylenetriaminepentaacetic acid, hydroxyethyliminodiacetic acid, 1,3-diamino-2-propanoltetraacetic acid, trans-cyclohexanediaminetetraacetic acid, ethylenediaminetetraacetic acid, glycol ether diaminetetraacetic acid, ethylenediamine-N,N,N',N'-tetrakismethylene
- the above-described developing solutions contain dialdehyde hardening agents and bisulfite adducts thereof. Examples thereof include glutaraldehyde and bisulfite adducts thereof.
- Additives which may be used in addition to the above-described ingredients include restrainers such as sodium bromide, potassium bromide and potassium iodide; organic solvents such as ethylene glycol, diethylene glycol, triethylene glycol, dimethylformamide, methyl cellosolve, hexylene glycol, ethanol and methanol; and anti-fogging agents such as mercapto compounds (e.g, 1-phenyl-5-mercapto-tetrazole, sodium salt of 2-mercaptobenzimidazole-5-sulfonic acid), indazole , compounds (e.g., 5-nitroindazole) and benzotriazole compounds (e.g., 5-methylbenzotriazole).
- restrainers such as sodium bromide, potassium bromide and potassium iodide
- organic solvents such as ethylene glycol, diethylene glycol, triethylene glycol, dimethylformamide, methyl cellosolve, hexylene glycol, ethanol and methanol
- the developing solutions may contain the development accelerators described in Research Disclosure, Vol. 176, No. 17643, item XXI (December 1978), color toning agents, surfactants, anti-foaming agents, water softeners and amino compounds (as described in JP-A-56-106244).
- silver stain inhibitor of the present invention other silver stain inhibitors such as the compounds described in JP-A-56-24347 may be incorporated in the developing solutions in the development of the present invention.
- the developing solutions of the present invention may contain amino compounds such as the alkanolamines described in European Patent 136,582A, U.K. Patent 958,678, U.S. Patent 3,232,761 and JP-A-56-106244 to accelerate development or increase contact or for other purpose.
- the fixing solution is an aqueous solution containing a thiosulfate and has a pH of not lower than 3.8, preferably 4.2 to 7.0.
- the fixing agents include sodium thiosulfate and ammonium thiosulfate. Ammonium thiosulfate is particularly preferred from the viewpoint of the rate of fixing.
- the amount of the fixing agent to be used can be properly changed, and the fixing agent is generally used in an amount of about 0.1 to about 6 mol/l.
- the fixing solutions may contain water-soluble aluminum salts capable of functioning as hardening agents.
- water-soluble aluminum salts include aluminum chloride, aluminum sulfate and potassium alum.
- the fixing solutions may contain tartaric acid, citric acid, gluconic acid or derivatives thereof singly or in a combination of two or more.
- the fixing solutions containing these compounds in an amount of at least 0.005 mol per liter of the fixing solution are effective, and the fixing solutions containing these compounds in an amount of 0.01 to 0.03 mol/l are particularly effective.
- the fixing solutions may contain preservatives (e.g., sulfites, bisulfites), pH buffering agents (e.g., acetic acid, boric acid), pH adjustors (e.g., sulfuric acid), chelating agents having a water softening ability and the compounds described in JP-A-62-78551.
- preservatives e.g., sulfites, bisulfites
- pH buffering agents e.g., acetic acid, boric acid
- pH adjustors e.g., sulfuric acid
- chelating agents having a water softening ability and the compounds described in JP-A-62-78551.
- development stage time or “development time” as used herein refers to the time taken until the top of the light-sensitive material to be processed is immersed in the subsequent fixing solution from the time that the top was immersed in the developing tank solution of an automatic processor.
- fixing time refers to the time until the top is immersed in the subsequent rinsing tank solution (stabilizing solution) from the time that the top was immersed in the fixing tank solution.
- rinsing time refers to the time during which the light-sensitive material is immersed in the rinsing tank solution.
- drying time refers to the time during which the light-sensitive material is placed in a drying zone which is provided in the automatic processor. Hot air of 35° to 100° C., preferably 40° to 80° C., is generally blown into the drying zone.
- the development time is from 5 seconds to one minute, preferably from 5 to 30 seconds, and the development temperature is preferably from 25° to 50° C., more preferably from 25° to 40° C.
- the fixing temperature and fixing time are preferably from about 20° to about 50° C. for 5 seconds to one minute, more preferably from 25° to 40° C. for 5 to 30 seconds.
- Rinsing or stabilizing bath temperatures and times are preferably from 0° to 50° C. for 5 seconds to one minute, more preferably from 15° to 40° C. for 5 to 30 seconds.
- the developed, fixed and rinsed (or stabilized) photographic materials are dried via squeezee rolls which squeeze rinsing water from the materials. Drying is conducted at a temperature of about 40° to about 100° C. Drying time properly varies depending on ambient conditions, but is generally from about 5 seconds to one minute, particularly preferably from about 5 to 30 seconds at a temperature of 40° to 80° C.
- Dry to Dry time (the time taken until the top of a light-sensitive material leaves the drying zone of an automatic processor from the time that the top is introduced into the automatic processor) may be 30 to 60 seconds.
- Principal light-sensitive materials to which the present invention can be preferably applied include general-purpose black-and-white light-sensitive materials.
- the present invention can be applied to reversal color light-sensitive materials, light-sensitive materials for laser printers which record medical images, printing scanner light-sensitive materials, direct X-ray light-sensitive materials for medical use, indirect X-ray light-sensitive materials for medical use, CRT light-sensitive materials, light-sensitive materials for X-ray cinema photographing, black-and-white negative films for photographing, black-and-white photographic materials for photographing and microfilms, without particular limitation.
- the silver halide photographic material to which the method for development according to the present invention is applicable comprises a support and at least one silver halide emulsion layer coated thereon.
- the silver halide emulsion layer can be coated on not only one side, but on both sides of the support.
- the photographic material may be provided with back layers, antihalation layers, interlayers, and an uppermost layer (e.g., protective layer).
- the silver halide emulsion is a dispersion of silver halide such as silver chloride, silver iodide, silver bromide, silver chlorobromide, silver iodobromide or silver chloroiodobromide, in a hydrophilic colloid.
- the silver halide emulsion is prepared by mixing a water-soluble silver salt (e.g., silver nitrate) with a water-soluble halide in the presence of water and a hydrophilic colloid in a conventional manner (e.g., single jet process, double jet process, controlled double jet process) and subjecting the resulting emulsion to physical ripening and chemical ripening such as gold sensitization and/or sulfur sensitization.
- the thus-prepared emulsion comprises cubic, octahedral or spherical silver halide grains, or tabular silver halide grains having a high aspect ratio as described in Research Disclosure, No. 22534 (January 1983).
- a spectral sensitizing agent e.g., cyanine dye, merocyanine dye or a mixture thereof
- a stabilizer e.g., 4-hydroxy-6-methyl-1,3,3a,7-tetrazaindene
- a sensitizing agent e.g., the compound described in U.S. Pat. No.
- an anti-fogging agent e.g., benzotriazole, 5-nitrobenzoimidazole
- polyethylene oxide e.g., polyethylene oxide
- a hardening agent and a coating aid e.g., saponin, sodium laurylsulfate, dodecylphenol polyethylene oxide ether, hexadecyltrimethylammonium bromide
- a coating aid e.g., saponin, sodium laurylsulfate, dodecylphenol polyethylene oxide ether, hexadecyltrimethylammonium bromide
- the thus-prepared silver halide emulsion is coated on a support such as a cellulose acetate film or a polyethylene terephthalate film by means of a dip coating method, an air knife coating method, a bead method, an extrusion coating method, a doctor coating method or a double side coating method, and then dried.
- a support such as a cellulose acetate film or a polyethylene terephthalate film
- the method for development according to the present invention is particularly suitable for use in processing surface latent image type silver halide photographic materials.
- surface latent image type refers to the materials wherein the sensitivity obtained by Surface Development (A) described below is higher than that obtained by Internal Development (B) described below when the light-sensitive material is developed by means of Surface Development (A) and Internal Development (B) after 1 to 100 second exposure. Sensitivity is defined by the following formula,
- Eh represents the exposure amount required for obtaining just a middle density [(D max +D min ) ⁇ 1/2] between maximum density (D max ) and minimum density (D min ).
- Processing is carried out in a bleaching solution containing red prussiate (3 g/l) and phenosafranine (0.0125 g/l) at about 20° C. for 10 minutes. After rinsing for 10 minutes, development is carried out with a developing solution having the following formulation at 20° C. for 10 minutes:
- tabular silver halide grains are used in X-ray processing.
- the grains When tabular grains are used, the grains have an aspect ratio of preferably not lower than 4, but lower than 20, more preferably not lower than 5, but lower than 10. Further, the grains have a thickness of preferably not more than 0.3 ⁇ , particularly preferably not more than 0.2 ⁇ .
- the aspect ratio of the tabular grains is the ratio of the mean value of the diameters of circles (each circle having an area equal to the projected area of each grain) to the mean value of the thicknesses of the grains.
- tabular grains account for at least 80% by weight, more preferably at least 90% by weight of the entire silver halide grains.
- a spectral sensitizing agent e.g., cyanine dye, merocyanine dye or a mixture thereof
- a stabilizer e.g., 4-hydroxy-6-methyl-1,3,3a,7-tetrazaindene
- a sensitizing agent e.g., the compounds described in U.S. Pat. No.
- an anti-fogging agent e.g., benzotriazole, 5-nitrobenzoimidazole
- polyethylene oxide e.g., polyethylene oxide
- a hardening agent and a coating aid e.g., saponin, sodium laurylsulfate, dodecylphenol polyethylene oxide ether, hexadecyltrimethylammonium bromide
- a coating aid e.g., saponin, sodium laurylsulfate, dodecylphenol polyethylene oxide ether, hexadecyltrimethylammonium bromide
- the thus-prepared tabular silver halide emulsion is coated on a support such as cellulose acetate film or polyethylene terephthalate film by means by a dip coating method, an air knife coating method, a bead method, an extrusion method, a doctor coating method or a double side coating method, and then dried.
- a support such as cellulose acetate film or polyethylene terephthalate film
- the temperature of the emulsion was lowered to 35° C., and soluble salts were removed by a flocculation method.
- the temperature was then elevated to 40° C., and 30 g of gelatin and 2 g of phenol were added thereto.
- the pH and pAg were adjusted to 6.40 and 8.10, respectively by sodium hydroxide and potassium bromide.
- the sensitizing dye having the following structure After the temperature was elevated to 56° C., 600 mg of the sensitizing dye having the following structure and 150 mg of the stabilizer having the following structure were added thereto. After 10 minutes, 2.4 mg of sodium thiosulfate pentahydrate, 140 mg of potassium thiocyanate and 2.1 mg of chloroauric acid were added to each emulsion. After 80 minutes, the mixture was quenched for solidification to form an emulsion.
- the resulting emulsion comprised grains having such a grain size distribution that grains having an aspect ratio of not lower than 3 accounted for 98% of the sum total of the projected areas of the entire grains. With regard to all grains having an aspect ratio of not lower than 2, the average diameter of the projected areas was 1.4 ⁇ m, the standard deviation was 22%, the average thickness was 0.187 ⁇ m, and the aspect ratio was 7.5. ##STR6##
- the above coating solution and a coating solution for a surface protective layer were simultaneously coated on a transparent PET support of 175 ⁇ m in thickness.
- the total amount of coated silver on both sides was 3.2 g/m 2 .
- a coating solution for a surface protective layer was prepared by using the following components in the following amounts:
- the working solution was prepared so that 2.5 l of Part A, 400 ml of Part B and 250 ml of Part C. in order were dissolved in about 6 l of water with stirring. Finally, water was added thereto to make the solution 10 l, and the pH thereof was adjusted to 10.40. The resulting working solution was referred to as a developing replenisher. Twenty ml of the starter was added to 1 l of the replenisher. The resulting solution was the developing solution.
- the following developing solutions were prepared by using the developing solution prepared above. Subsequently, the pH of the developing solutions was adjusted to 10.25.
- Fuji F (a product of Fuji Photo Film Co., Ltd.) was used for fixing.
- Photographic characteristics are shown in the following table. Among the photographic characteristics, fog value was measured as an increase in the net density obtained by correcting the density of the base.
- Gradation G represents a gradient of a straight line formed by joining a point of a density of (Fog+0.25) to a point of a density of (Fog+2.0).
- Sensitivity is determined by the relative value of the reciprocal of the exposure amount giving a blackening density of (Fog+0.1).
- Dm represents maximum density.
- Test No. 2 wherein a 45 second processing was carried out with a developing solution which does not contain the compound of the invention, G, sensitivity and Dm are greatly lowered in comparison with the 90 second processing.
- Test Nos. 3 and 4 wherein a 45 second processing was carried out with the developing solution containing a compound which is similar to that of the invention, but outside the scope of the compound of the invention, the results are substantially the same as those of Test No. 2 and an effect of accelerating development can not be obtained.
- Test Nos. 5 to 8 wherein a 45 second processing is carried out with the developing solution containing the compound of the invention, the remarkable effect of accelerating development can be obtained in comparison with Test No. 2, and similar results to those of Test No. 1 can be obtained.
- the addition of the aqueous silver nitrate solution and the aqueous potassium iodide solution was made at such a rate that the flow rate of each solution at the time of the commencement of the addition was 8 cc/min, and the flow rate of the addition was linearly accelerated so as to allow the addition of 80 cc of each solution to be completed in 5 minutes.
- the temperature of the emulsion was elevated to 40° C., 10.5 g of gelatin and 2.56 g of phenoxyethanol were added thereto, and the pH thereof was adjusted to 6.8 by adding sodium hydroxide.
- the resulting emulsion weighed 730 g (finished amount) and comprised monodisperse fine AgI grains having a mean diameter of 0.015 ⁇ m.
- an aqueous solution of 0.9 g of potassium bromide was added thereto.
- 53 cc of an aqueous silver nitrate solution (silver nitrate content: 4.90 g) was added thereto over a period of 13 minutes, and 15 cc of 25% ammonia water was added thereto.
- the mixture at that temperature was physically ripened for 20 minutes, and 14 cc of a 100% acetic acid solution was added thereto.
- an aqueous solution of 133.3 g of silver nitrate and an aqueous solution of potassium bromide were added thereto over a period of 35 minutes by means of a controlled double jet process while keeping pAg at 8.5.
- 10 cc of a 2N potassium thiocyanate solution and 0.05 mol % (based on the total amount of silver) of the above-described fine AgI grains were added thereto.
- the emulsion was physically ripened at that temperature for 5 minutes, and the temperature was lowered to 35° C.
- soluble salts were removed by a flocculation method.
- the temperature of the emulsion was elevated to 40° C., and 35 g of gelatin, 2.35 g of phenoxyethanol and 0.8 g of polysodium styrenesulfonate as a thickener were added thereto.
- the pH and pAg were adjusted to 5.90 and 8.25, respectively by sodium hydroxide and a silver nitrate solution.
- the emulsion was chemically sensitized while keeping the temperature at 56° C. with stirring.
- reduction sensitization was first carried out by adding 0.043 mg of thiourea dioxide and retaining the emulsion as such for 22 minutes. Subsequently, 20 mg of 4-hydroxy-6-methyl-1,3,3a,7-tetrazaindene and 500 mg of the following Sensitizing Dye A were added thereto. Further, 1.1 g of an aqueous solution of calcium chloride was added. Subsequently, 3.3 mg of sodium thiosulfate, 2.6 mg of chloroauric acid and 90 mg of potassium thiocyanate were added thereto. After 40 minutes, the emulsion was cooled to 35° C. ##STR10##
- a coating solution for a surface protective layer was prepared by using the following ingredients in such an amount as to give the following coating weight:
- the dispersion was centrifuged to remove dye particles having a particle size of not smaller than 0.9 ⁇ m.
- a biaxially oriented polyethylene terephthalate film of 183 ⁇ m in thickness was subjected to a corona discharge treatment.
- a first undercoating solution having the following composition was then coated on the film in such an amount as to give a coating weight of 5.1 cc/m 2 .
- the coating was carried out by means of a wire bar coater.
- the coated film was dried at 175° C. for one minute.
- a first undercoat layer was also provided on the other side in the same manner as described above.
- the polyethylene terephthalate used contained 0.04 wt % of the dye having the following structure: ##STR18##
- a second undercoating solution having the following composition was coated on the first undercoat layer on both sides in such an amount as to give the following coating weight.
- the coating was conducted one side by one side. Both sides were coated by means of a wire bar coater and dried at 150° C. ##STR20##
- the emulsion layer and the surface protective layer were coated on both sides of the above-described transparent support by means of co-extrusion method.
- the amount of silver coated was 1.7 g/m 2 per one side.
- the light-sensitive material was left to stand at 25° C. and 60% RH for 7 days. At this point, the swelling ratio of the hydrophilic colloid layer was measured.
- the dry thickness (a) was determined by inspecting a cut piece through a scanning type electron microscope.
- the thickness (b) of the swollen layer was determined by inspecting the light-sensitive material through a scanning type electron microscope after the light-sensitive material as immersed in distilled water at 21° C. for 3 minutes was freeze-dried by liquid nitrogen.
- the swelling ratio was determined by the following formula: ##EQU1##
- the swelling ratio of the light-sensitive material was 225%.
- a concentrated liquid developer having the following formulation and a concentrated liquid fixer having the following formulation were used in this Example:
- the above concentrated liquid developer was diluted in the following manner to prepare a working solution.
- Example 2 The same experiment (30 seconds) as that of Example 2 was made except that SRX-1001 (a product of Konica Corporation) was used as the automatic processor and linear velocity was increased so that Dry to Dry was 30 seconds. There were obtained similar results to those of Example 2.
- SRX-1001 a product of Konica Corporation
- emulsion grains had such a grain size distribution that 98% of the entire grains had a grain size within ⁇ 40% of the mean grain size.
- 1 ⁇ 10 -3 mol of potassium iodide per mol of silver was added.
- the pH thereof was adjusted to 6.2 and the pAg was adjusted to 8.6.
- gold-sulfur sensitization was carried out by using sodium thiosulfate and chloroauric acid to obtain the desired photographic characteristics.
- the ratio of the (100) face/the (111) face of these emulsions was 93/7 as measured by the Kubelka-Munk method.
- aqueous gelatin solution heated to 40° C. To a 10 wt % aqueous gelatin solution heated to 40° C. were added an aqueous solution of polysodium styrenesulfonate as a thickener, fine particles of polymethyl methacrylate (average particle size: 3.0 ⁇ m) as a matting agent, N,N'-ethylenebis(vinylsulfonylacetamido) as a hardening agent, an aqueous solution of sodium t-octylphenoxyethoxyethanesulfonate as a coating aid, an aqueous solution of a polyethylene surfactant as an antistatic agent and an aqueous solution of the fluorine-containing compounds having the following structures as an antistatic agent to prepare a coating solution.
- polysodium styrenesulfonate fine particles of polymethyl methacrylate (average particle size: 3.0 ⁇ m) as a matting agent, N,N'
- aqueous gelatin solution heated to 40° C. To a 10 wt % aqueous gelatin solution heated to 40° C. were added an aqueous solution of polysodium styrenesulfonate as a thickener, fine particles of polymethyl methacrylate (average particle size: 3.0 ⁇ m) as a matting agent, an aqueous solution of sodium t-octylphenoxyethoxyethane sulfonate as a coating aid, an aqueous solution of a polyethylene surfactant as an antistatic agent and an aqueous solution of the following fluorine-containing compounds as an antistatic agent to prepare a coating solution.
- polysodium styrenesulfonate fine particles of polymethyl methacrylate (average particle size: 3.0 ⁇ m) as a matting agent
- an aqueous solution of sodium t-octylphenoxyethoxyethane sulfonate as a coating aid
- the coating solution for the back layer and the coating solution for the surface protective layer of the back layer were coated on one side of a polyethylene terephthalate support in such an amount as to give a coating weight of 4 g/m 2 of gelatin. Subsequently, the emulsion coating solution containing the infrared sensitizing dye prepared in the above preparation step (2) and the coating solution for the surface protective layer of the light-sensitive layer were coated on the other side of the support in such an amount as to give a coating weight of 3.2 g/m 2 in terms of silver while controlling the amount of the hardening agent in the coating solution for the surface protective layer so that the swelling ratio of the coated layer became 110%.
- the developing solution (working solution of Example 2), a sample obtained by adding Compound 3 (0.16 g/l) of the present invention to the developing solution and a sample obtained by adding Compound 13 (0.18 g/l) of the present invention to that developing solution were used.
- the above described light-sensitive material was developed in the following manner by using these developing solutions and a roller conveying type automatic processor.
- the temperature of the emulsion was lowered to 35° C., and soluble salts were removed by a flocculation method.
- the temperature was raised to 40° C., and 30 g of gelatin and 2 g of phenol were added thereto.
- the pH and pAg were adjusted to 6.40 and 8.10, respectively by sodium hydroxide and potassium bromide.
- the above coating solution and the coating solution for the surface protective layer were simultaneously coated on a transparent PET support of 175 ⁇ m in thickness to prepare each of the following Photographic Materials 501 to 505.
- the total amount of silver coated on both sides was 3.2 g/m 2 .
- a coating solution for the surface protective layer was prepared by using the following components in the following amounts.
- the working solution was prepared in such a manner that 2.5 l of Part A, 250 ml of Part B and 250 ml of Part C. in order were dissolved in about 6 l of water with stirring. Finally, water was added thereto to make the solution 10 l, and the pH thereof was adjusted to 10.40. The resulting working solution was referred to as a developing replenisher. Twenty ml of the starter was added to 1 l of the replenisher. The resulting solution was the developing solution.
- Fuji F (a product of Fuji Photo Film Co., Ltd.) was used for fixing.
- Photographic Materials 501 to 505 were developed in the following manner by using a roller conveying type automatic processor (FPM-9000 manufactured by Fuji Photo Film Co., Ltd.).
- the processing stages of 90 second processing and 45 second processing were as follows:
- the photographic characteristics are shown in the following table. Among the photographic characteristics, the fog value was measured as an increase in the net density obtained by correcting the density of the base.
- Gradation G represents the gradient of a straight line formed by joining a point of a density of (Fog+0.25) to a point of the density of (Fog+2.0).
- Sensitivity is determined by the relative value of the reciprocal of the exposure amount giving a blackening density of (Fog+0.1).
- Dm represents maximum density.
- the method of the present invention has the effect of accelerating development, provides good photographic characteristics and enables ultra-high-speed processing to be conducted. Further, good stability of the developing solution can be maintained, silver stain is not caused, and highly concentrated performance can be obtained.
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Abstract
Description
Sensitivity=100/Eh
______________________________________ N-Methyl-p-aminophenol (hemisulfate) 2.5 g Ascorbic acid 10.0 g Sodium metaborate tetrahydrate 35.0 g Potassium bromide 1.0 g Water to make 1 liter ______________________________________
______________________________________ N-Methyl-p-aminophenol (hemisulfate) 3.5 g Ascorbic acid 10.0 g Sodium metaborate tetrahydrate 35.0 g Potassium bromide 1.0 g Sodium thiosulfate 3.0 g Water to make 1 liter ______________________________________
______________________________________ Gelatin added in such an amount as to give a ratio of silver/binder (gelatin + polymer) of 0.7. Water-soluble polyester 20% (wt % based on the amount of gelatin) Polymer latex (poly(ethyl 25.0 g acrylate/methacrylate acid) = 97/3) Hardening agent 1,2-Bis(sulfonylacetamido)ethane 8 mmol/100 g of gelatin of emulsion layer of surface protective layer Phenoxyethanol 2 g ##STR7## 12 g/Ag · mol 2,6-Bis(hydroxyamino)-4-diethyl- 80 mg amino-1,3,5-triazine Polysodium acrylate 4.0 g (average MW = 41,000) Polypotassium styrenesulfonate 1.0 g (average MW = 600,000) ______________________________________
______________________________________ Coating weight Composition of surface protective layer (g/m.sup.2) ______________________________________ Gelatin 1.15 Polyacrylamide 0.25 (average MW = 45,000) Polysodium acrylate 0.02 (average MW = 400,000) Sodium salt of p-t-octylphenoxy- 0.02 diglycerylbutylsufonated material Poly(degree of polymerization: 10)- 0.035 oxyethylene cetyl ether Poly(degree of polymerization: 10)- 0.01 oxyethylene-poly(degree of polymeri- zation: 3)oxyglyceryl-p-octylphenoxy ether C.sub.8 F.sub.17 SO.sub.3 K 0.003 ##STR8## 0.001 ##STR9## 0.003 Proxel 0.001 Polymethyl methacrylate 0.025 (average particle size: 3.5 μm) Poly(methyl methacrylate/methacrylic 0.020 acid) (molar ratio = 7:3, average particle size: 2.5 μm) ______________________________________
______________________________________ Part A for 10 l Diethylenetriaminepentaacetic acid 20 g Potassium hydroxide 291 g Potassium sulfite 442 g Sodium hydrogencarbonate 75 g Boric acid 10 g Hydroquinone 300 g Diethylene glycol 120 g 5-Methylbenzotriazole 0.2 g Potassium bromide 15 g Water to make 2.5 l Part B for 10 l Triethylene glycol 200 g Glacial acetic acid 40 g 5-Nitroindazole 2.5 g 1-Phenyl-3-pyrazolidone 15 g Water to make 250 ml Part C for 10 l Glutaraldehyde (50 wt %) 100 g Sodium metabisulfite 126 g Water to make 250 ml Starter Glacial acetic acid 150 g Potassium bromide 300 g Water to make 1.5 l ______________________________________
______________________________________ Developing Solution Compound added to the developing solution Sample No. prepared above ______________________________________ 1 (Comp. Ex.) not added 2 (Comp. Ex.) Compound described in JP-B-48-8131 (the term "JP-B" as used* herein means an "examined Japanese patent publication") 0.2 g of 2-mercapto-5-aminophenyl-1,3,4-oxadiazole was added to 1 l of the developing solution. 3 (Comp. Ex.) 0.13 g of 2-mercapto-5-ethyl-1,3,4-oxadiazole was added to* 1 l of the developing solution. 4 (Invention) Compound 3 (0.16 g) of the invention was added to 1 l* of the developing solution. 5 (Invention) Compound 4 (0.28 g) of the invention was added to 1 l* of the developing solution. 6 (Invention) Compound 8 (0.35 g) of the invention was added to 1 l* of the developing solution. 7 (Invention) Compound 13 (0.18 g) of the invention was added to 1 l* of the developing solution. ______________________________________ *Amount added was equimolar amount.
______________________________________ Temp. Time Processing stage (°C.) (sec) Replenishment rate ______________________________________ 90 Second Processing Development 35 25 45 ml/10 × 12 in. Fixing 30 20 60 ml/10 × 12 in. Rinsing 20 11 3 l/1 min. Squeeze drying 50 34 / Total 90 / 45 Second Processing Development 35 14 45 ml/10 × 12 in. Fixing 32 12 60 ml/10 × 12 in. Rinsing 8 3 l/1 min. Squeeze drying 11 / Total 45 / ______________________________________
______________________________________ Developing Processing Solution Time Sensi- Test No. Sample No. (sec) Fog .sup.-- G tivity Dm ______________________________________ 1 1 90 0.04 2.90 100 3.50 (Comp. Ex.) 2 " 45 0.03 2.50 60 3.10 (Comp. Ex.) 3 2 " " 2.45 57 3.15 (Comp. Ex.) 4 3 " " 2.60 55 3.05 (Comp. Ex.) 5 4 " 0.04 2.95 105 3.60 (Inven- tion) 6 5 " " 2.92 102 3.55 (Inven- tion) 7 6 " " 2.91 101 3.52 (Inven- tion) 8 7 " " 2.93 103 3.53 (Inven- tion) ______________________________________
______________________________________ 2,6-Bis(hydroxyamino)-4-diethyl- 72 mg amino-1,3,5-triazine Gelatin 30 g Trimethylolpropane 9 g Dextran (average MW = 39,000) 18.5 g Polysodium styrenesulfonate 1.8 g (average MW = 600,000) Hardening agent 1,2-Bis(vinylsulfonylacetamido)ethane ______________________________________
______________________________________ Coating weight Composition of surface protective layer (g/m.sup.2) ______________________________________ Gelatin 0.966 Polysodium acrylate 0.023 (average MW = 400,000) 4-Hydroxy-6-methyl-1,3,3a,7-tetraza- 0.015 indene ##STR12## 0.013 ##STR13## 0.045 ##STR14## 0.0065 ##STR15## 0.003 ##STR16## 0.001 g/m.sup.2 Polymethyl methacrylate 0.087 (average particle size: 3.7 μm) Proxel 0.0005 (pH was adjusted with NaOH to 6.4) ______________________________________
______________________________________ Concentrated liquid developer (2.5-fold concentration) ______________________________________ Potassium hydroxide 43 g Sodium sulfite 100 g Potassium sulfite 126 g Diethylenetriaminepentaacetic acid 5 g Boric acid 20 g Hydroquinone 85 g 4-Hydroxymethyl-4-methyl-1-phenyl- 4 g 3-pyrazolidone Diethylene glycol 30 g 5-Methylbenzotriazole 0.2 g Potassium bromide 10 g Water to make 1 liter (pH was adjusted to 10.65) ______________________________________
______________________________________ Concentrated liquid developer (400 ml) + water (600 ml) = working solution (pH was adjusted to 10.35) Concentrated liquid fixer (4-fold concentration) ______________________________________ Ammonium thiosulfate 500 g Disodium ethylenediaminetetraacetate 0.1 g dihydrate Sodium thiosulfate pentahydrate 50 g Sodium sulfite 60 g Potassium hydroxide 25 g Acetic acid 100 g Water to make 1 liter (pH was adjusted to 5.1) The above concentrated liquid fixer was diluted in the following manner to prepare a working solution. Concentrated liquid fixer (250 ml) + water (750 ml) = working solution (pH was adjusted to 5.0) ______________________________________
______________________________________ (Path length = 1950 mm) Temp. Time Processing stage (°C.) (sec) Replenishment rate ______________________________________ Development 35 9 25 ml/10 × 12 in Fixing 32 7 25 ml/10 × 12 in Rinsing 20 5 3 l/1 min Squeeze drying 55 9 Total 30 ______________________________________
______________________________________ Processing Time Sensi- Test No. Processing (sec) Fog .sup.-- G tivity Dm ______________________________________ 1 Test No. 1 90 0.04 2.90 100 3.50 (Comp. of Ex. 1 Ex.) 2 not added 30 0.03 2.40 65 3.15 (Comp. Ex.) 3 Compound 3 " 0.04 2.93 102 3.52 (Inven- was added tion) 4 Compound 8 " 0.04 2.92 101 3.49 (Inven- was added tion) ______________________________________
C.sub.8 F.sub.17 SO.sub.2 N(C.sub.3 H.sub.7)CH.sub.2 COOK and C.sub.8 F.sub.17 N(C.sub.3 H.sub.7)(CH.sub.2 CH.sub.2 --O--).sub.15 H
C.sub.8 F.sub.17 SO.sub.2 N(C.sub.3 H.sub.7)CH.sub.2 COOK and C.sub.8 F.sub.17 SO.sub.2 N(C.sub.3 H.sub.7)(CH.sub.2 CH.sub.2 --O--).sub.15 H
______________________________________ Temp. Time Processing stage (°C.) (sec) Replenishment rate ______________________________________ 60 Second Processing Development 35 11.5 50 ml/25.7 × 36.4 cm Fixing 30 12.5 " Rinsing 20 10 3 l/1 min. Squeeze drying 50 26 Total 60 30 Second Processing Development 35 6 50 ml/25.7 × 36.4 cm Fixing 35 6 " Rinsing 20 5 3 l/1 min. Squeeze drying 50 13 Total 30 ______________________________________
______________________________________ Process- Developing ing Time Sensi- Test No. Solution (sec) Fog .sup.-- G tivity Dm ______________________________________ 1 not added 60 0.04 2.70 100 3.20 (Comp. Ex.) 2 " 30 0.03 2.20 55 2.80 (Comp. Ex.) 3 Compound 3 " 0.04 2.75 102 3.25 (Inven- of the inven- tion) tion was added 4 Compound 13 " 0.04 2.72 101 3.22 (Inven- of the inven- tion) tion was added ______________________________________
______________________________________ Gelatin added in such an amount as to give a ratio of silver/binder (gelatin + polymer) of 1.0. Water-soluble polyester 20% (wt % based on the amount of gelatin) Polymer latex (poly(ethyl 25.0 g acrylate/methacrylate acid) = 97/3) Hardening agent 1,2-Bis(sulfonylacetamido)ethane 8 mmol/100 g of gelatin of emulsion layer of surface protective layer Phenoxyethanol 2 g ##STR24## 12 g/Ag · mol 2,6-Bis(hydroxyamino)-4-diethyl- 80 mg amino-1,3,5-triazine Polysodium acrylate 4.0 g (average MW = 41,000) Polypotassium styrenesulfonate 1.0 g (average MW = 600,000) ______________________________________
______________________________________ Photographic Material Compound No. ______________________________________ 501 (blank, Comp. Ex.) -- 502 (Invention) 1 503 (Invention) 3 504 (Invention) 4 505 (Invention) 10 ______________________________________ Coating weight Surface protective later (g/m.sup.2) ______________________________________ Gelatin 1.15 Polyacrylamide (average MW = 45,000) 0.25 Polysodium acrylate 0.02 (average MW = 400,000) Sodium salt of p-t-octylphenoxy- 0.02 diglycerylbutylsufonated material Poly(degree of polymerization: 10)- 0.035 oxyethylene cetyl ether Poly(degree of polymerization: 10)- 0.01 oxyethylene-poly(degree of polymer- ization: 3)oxyglyceryl-p-octylphenoxy ether C.sub.8 F.sub.17 SO.sub.3 K 0.003 ##STR25## 0.001 ##STR26## 0.003 Proxel 0.001 Polymethyl methacrylate 0.025 (average particle size: 3.5 μm) Poly(methyl methacrylate/methacrylic 0.020 acid) (molar ratio = 7:3, average particle size: 2.5 μm) ______________________________________
______________________________________ Part A for 10 l Diethylenetriaminepentaacetic acid 20 g Potassium hydroxide 291 g Potassium sulfite 442 g Sodium hydrogencarbonate 75 g Boric acid 10 g Hydroquinone 300 g Diethylene glycol 120 g 5-Methylbenzotriazole 0.2 g Potassium bromide 15 g Water to make 2.5 l Part B for 10 l Triethylene glycol 200 g Glacial acetic acid 40 g 5-Nitroindazole 2.5 g 1-Phenyl-3-pyrazolidone 15 g Water to make 250 ml Part C for 10 l Glutaraldehyde (50 wt %) 100 g Sodium metabisulfite 126 g Water to make 250 ml Starter Glacial acetic acid 150 g Potassium bromide 300 g Water to make 1.5 l ______________________________________
______________________________________ Temp. Time Processing stage (°C.) (sec) Replenishment rate ______________________________________ 90 Second Processing Development 35 25 45 ml/10 × 12 in. Fixing 30 20 60 ml/10 × 12 in. Rinsing 20 11 3 l/1 min. Squeeze drying 50 34 Total 90 45 Second Processing Development 35 14 45 ml/10 × 12 in. Fixing 32 12 60 ml/10 × 12 in. Rinsing 8 3 l/1 min. Squeeze drying 11 Total 45 ______________________________________
______________________________________ Photo- Process- Photo- graphic ing Time graphic Sensi- Test No. Material (sec) Fog .sup.-- G tivity Dm ______________________________________ 1 501 90 0.04 2.85 100 3.40 (Comp. Ex.) 2 " 45 0.03 2.50 65 3.10 (Comp. Ex.) 3 502 " 0.04 2.90 98 3.35 (Invention) 4 503 " 0.04 2.87 101 3.41 (Invention) 5 504 " 0.04 2.92 99 3.38 (Invention) 6 505 " 0.04 2.89 99 3.43 (Invention) ______________________________________
Claims (6)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2-249415 | 1990-09-19 | ||
JP2249415A JP2684236B2 (en) | 1990-09-19 | 1990-09-19 | Development processing method of silver halide photosensitive material |
JP3-012454 | 1991-01-10 | ||
JP1245491A JPH04235547A (en) | 1991-01-10 | 1991-01-10 | Silver halide photosensitive material |
Publications (1)
Publication Number | Publication Date |
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US5232823A true US5232823A (en) | 1993-08-03 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US07/762,114 Expired - Lifetime US5232823A (en) | 1990-09-19 | 1991-09-19 | Method for development of silver halide light-sensitive black and white material |
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US (1) | US5232823A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USH1608H (en) * | 1993-10-06 | 1996-11-05 | Konica Corp. | Method of processing silver halide photographic light-sensitive material |
US5811226A (en) * | 1996-03-14 | 1998-09-22 | Eastman Kodak Company | Method of processing a silver halide photographic element which reduces fog |
US6187520B1 (en) * | 1998-07-01 | 2001-02-13 | Eastman Kodak Company | Photographic high contrast silver halide material and method of processing |
US6228572B1 (en) | 1999-07-21 | 2001-05-08 | Eastman Kodak Company | Color photographic element containing ballasted mercaptodiazole derivative and inhibitor releasing coupler |
US6489090B1 (en) | 2000-08-21 | 2002-12-03 | Eastman Kodak Company | Stabilized ascorbic acid developing compositions and methods of use |
US6673528B2 (en) | 2000-08-21 | 2004-01-06 | Eastman Kodak Company | Ascorbic acid developing compositions containing sugar and methods of use |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4789627A (en) * | 1906-07-02 | 1988-12-06 | Fuji Photo Film Co., Ltd. | Method for forming direct positive color images |
US4886738A (en) * | 1986-10-03 | 1989-12-12 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
US5057402A (en) * | 1988-01-18 | 1991-10-15 | Fuji Photo Film Co., Ltd. | Silver halide photographic materials |
-
1991
- 1991-09-19 US US07/762,114 patent/US5232823A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4789627A (en) * | 1906-07-02 | 1988-12-06 | Fuji Photo Film Co., Ltd. | Method for forming direct positive color images |
US4886738A (en) * | 1986-10-03 | 1989-12-12 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material |
US5057402A (en) * | 1988-01-18 | 1991-10-15 | Fuji Photo Film Co., Ltd. | Silver halide photographic materials |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USH1608H (en) * | 1993-10-06 | 1996-11-05 | Konica Corp. | Method of processing silver halide photographic light-sensitive material |
US5811226A (en) * | 1996-03-14 | 1998-09-22 | Eastman Kodak Company | Method of processing a silver halide photographic element which reduces fog |
US5935771A (en) * | 1996-03-14 | 1999-08-10 | Eastman Kodak Company | Method of processing a silver halide photographic element which reduces fog |
US6187520B1 (en) * | 1998-07-01 | 2001-02-13 | Eastman Kodak Company | Photographic high contrast silver halide material and method of processing |
US6228572B1 (en) | 1999-07-21 | 2001-05-08 | Eastman Kodak Company | Color photographic element containing ballasted mercaptodiazole derivative and inhibitor releasing coupler |
US6489090B1 (en) | 2000-08-21 | 2002-12-03 | Eastman Kodak Company | Stabilized ascorbic acid developing compositions and methods of use |
US6673528B2 (en) | 2000-08-21 | 2004-01-06 | Eastman Kodak Company | Ascorbic acid developing compositions containing sugar and methods of use |
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